docs(semconv): fix some invalid urls

[bestgopher]

Fixes #
Design discussion issue (if applicable) #

Changes

Some of the links here are invalid.

Merge requirement checklist

• CONTRIBUTING guidelines followed
• Unit tests added/updated (if applicable)
• Appropriate CHANGELOG.md files updated for non-trivial, user-facing changes
• Changes in public API reviewed (if applicable)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 81.3%. Comparing base (02c290d) to head (709d691).
Report is 1 commits behind head on main.

Additional details and impacted files

@@          Coverage Diff          @@
##            main   #2944   +/-   ##
=====================================
  Coverage   81.3%   81.3%           
=====================================
  Files        126     126           
  Lines      24251   24251           
=====================================
  Hits       19736   19736           
  Misses      4515    4515           

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[gruebel]

thanks 🍻

[bestgopher]

@lalitb The PR was closed due to my mistake. I don’t have permission to reopen it — could you please reopen it for me?